The High Precision AD/DA Card adds high precision AD/DA functionality to the Raspberry Pi, addressing the absence of these functions on the GPIO interface.
- Standard 40PIN GPIO expander for Raspberry Pi, supported by Raspberry Pi series and Jetson Nano.
- Built-in ADS1256, 8 channels of 24bit high precision ADC (4 differential input channels), sampling speed of 30ksps.
- Built-in DAC8552, 2 channels of 16bit high precision DAC.
- Integrated input via pin headers for connecting analog signals.
- The pin layout is compatible with the Waveshare sensor interface standard, facilitating the connection of various analog sensors.
- Integrated input/output interface via screw terminals for connecting analog/digital signals.
- AD/DA detection circuit mode, facilitating signal demonstration.
- Raspberry Pi GPIO interface: for connection to the Pi.
- AD/DA input/output: screw terminals.
- AD input: pin headers, compatible with the Waveshare sensor interface standard.
- 47.68M crystal.
- LM285-2.5: provides voltage reference for the ADC chip.
- Photoresistor.
- LED output indicator.
- 10K potentiometer.
- DAC8552: 16bit high precision DAC, 2 channels.
- Power indicator.
- ADS1256: 24bit high precision ADC, 8 channels (4 differential input channels).
- ADC test jumper.
- DAC test jumper.
- Power selection jumper.
- ADC ground reference configuration: when the input is single-ended, AINCOM is the reference terminal, which can be connected to GND or external voltage reference.